aTYR PHARMA INC
ATYR- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001339970
No open-market purchases or sales by aTYR PHARMA INC insiders were filed in the last 90 days; 89 institutions reported holding it in 13F filings for Q2 2026, worth $23.2M in total; no superinvestor holds it.
13F holders, Q3 2021
Institutional positions in aTYR PHARMA INC as of Sep 30, 2021. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 42
- +13 vs. Q2 2021
- Shares held
- 19.0M
- +12.0M (+174.0%) vs. Q2 2021
- Total value
- $172.1M
- +$138.4M (+409.9%) vs. Q2 2021
- New holders
- 17
- 17 more added
- Sold out
- 4
- 5 more reduced
Compare with Q2 2021: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting ATYR on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 89 | $23.2M |
| Q1 2026 | 111 | $43.7M |
| Q4 2025 | 84 | $42.1M |
| Q3 2025 | 103 | $43.9M |
| Q2 2025 | 110 | $336.5M |
| Q1 2025 | 87 | $186.5M |
| Q4 2024 | 77 | $198.6M |
| Q3 2024 | 56 | $84.3M |
| Q2 2024 | 47 | $75.1M |
| Q1 2024 | 56 | $81.5M |
| Q4 2023 | 46 | $58.1M |
| Q3 2023 | 41 | $58.7M |
| Q2 2023 | 41 | $77.0M |
| Q1 2023 | 37 | $72.8M |
| Q4 2022 | 36 | $40.2M |
| Q3 2022 | 33 | $57.2M |
| Q2 2022 | 36 | $53.1M |
| Q1 2022 | 41 | $105.0M |
| Q4 2021 | 47 | $153.5M |
| Q3 2021 | 42 | $172.1M |
| Q2 2021 | 29 | $33.8M |
| Q1 2021 | 25 | $26.3M |
Institutions, Q3 2021
Shares, value and share of portfolio for each institution holding aTYR PHARMA INC; share changes are against Q2 2021.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Federated Hermes, Inc. | 5,222,250 | $47.4M | 0.09% | +3,607,250+223.4% | Added |
| FMR LLC | 4,063,293 | $36.9M | 0.00% | +2,387,413+142.5% | Added |
| VR Adviser, LLC | 1,565,000 | $14.2M | 1.83% | +1,565,000 | New |
| Tang Capital Management LLC | 1,113,453 | $10.1M | 2.10% | +1,113,453 | New |
| Alyeska Investment Group, L.P. | 1,088,664 | $9.88M | 0.12% | −186,083−14.6% | Reduced |
| Vanguard Group Inc | 906,741 | $8.23M | 0.00% | +311,539+52.3% | Added |
| Baker Bros. Advisors LP | 625,000 | $5.67M | 0.02% | +625,000 | New |
| Ikarian Capital, LLC | 562,246 | $5.11M | 1.17% | +262,246+87.4% | Added |
| Two Sigma Investments, LP | 541,721 | $4.92M | 0.01% | +527,275+3,650.0% | Added |
| Two Sigma Advisers, LP | 482,450 | $4.38M | 0.01% | +362,500+302.2% | Added |
| Stonepine Capital Management, LLC | 410,535 | $3.73M | 1.70% | +410,535 | New |
| EAM Investors, LLC | 259,791 | $2.36M | 0.40% | +259,791 | New |
| Dimensional Fund Advisors LP | 224,279 | $2.04M | 0.00% | +3,351+1.5% | Added |
| BlackRock Inc. | 217,012 | $1.97M | 0.00% | −7,865−3.5% | Reduced |
| Citadel Advisors LLC | 200,415 | $1.82M | 0.00% | +170,542+570.9% | Added |
| Renaissance Technologies LLC | 179,655 | $1.63M | 0.00% | +3,400+1.9% | Added |
| Telemetry Investments, L.L.C. | 165,318 | $1.50M | 2.05% | −13,990−7.8% | Reduced |
| EAM Global Investors LLC | 152,792 | $1.39M | 0.33% | +152,792 | New |
| Virtu Financial LLC | 143,677 | $1.30M | 0.11% | +143,677 | New |
| Jane Street Group, LLC | 136,901 | $1.24M | 0.00% | +136,901 | New |
| Polaris Venture Management Co. V, L.L.C. | 130,572 | $1.19M | 8.42% | 00.0% | Unchanged |
| Geode Capital Management, LLC | 130,282 | $1.18M | 0.00% | +20,521+18.7% | Added |
| Susquehanna International Group, LLP | 81,781 | $743.0K | 0.00% | +70,942+654.5% | Added |
| Boothbay Fund Management, LLC | 56,329 | $511.0K | 0.02% | +23,899+73.7% | Added |
| State Street Corp | 55,999 | $508.0K | 0.00% | +800+1.4% | Added |
| Cubist Systematic Strategies, LLC | 51,327 | $466.0K | 0.01% | +51,327 | New |
| Marshall Wace, LLP | 43,006 | $390.0K | 0.00% | +43,006 | New |
| Ensign Peak Advisors, Inc | 37,884 | $344.0K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 24,673 | $224.0K | 0.00% | −1,432−5.5% | Reduced |
| Millennium Management LLC | 23,968 | $218.0K | 0.00% | −6,418−21.1% | Reduced |
| Cutler Group LP | 15,524 | $140.0K | 0.01% | +15,524 | New |
| Tocqueville Asset Management L.P. | 14,850 | $135.0K | 0.00% | +14,850 | New |
| Price T Rowe Associates Inc | 12,024 | $109.0K | 0.00% | +12,024 | New |
| Sheaff Brock Investment Advisors, LLC | 11,000 | $100.0K | 0.01% | +11,000 | New |
| Group One Trading, L.P. | 2,022 | $18.0K | 0.00% | +1,979+4,602.3% | Added |
| Wells Fargo & Company | 1,588 | $15.0K | 0.00% | +1,491+1,537.1% | Added |
| Tower Research Capital LLC (TRC) | 681 | $6.00K | 0.00% | +493+262.2% | Added |
| Bank of America Corp | 382 | $3.00K | 0.00% | +82+27.3% | Added |
| Carmichael Hill & Associates, Inc. | 300 | $3.00K | 0.00% | +300 | New |
| Charter Oak Capital Management, LLC | 150 | $1.00K | 0.00% | +150 | New |
| Ironwood Financial, llc | 50 | $0 | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 1 | $0 | 0.00% | +1 | New |
| Acadian Asset Management LLC | 0 | $0 | 0.00% | −42,724−100.0% | Sold out |
| XTX Topco Ltd | 0 | $0 | 0.00% | −12,265−100.0% | Sold out |
| UBS Group AG | 0 | $0 | 0.00% | −3,164−100.0% | Sold out |
| Royal Bank of Canada | 0 | $0 | 0.00% | −1−100.0% | Sold out |